About dydrogesterone
Oral progestogen hormone
Used for
- Treats painful periods and endometriosis
- Treats irregular or absent periods
- Used with estrogen in hormone replacement therapy
- Supports selected fertility treatments and pregnancy-related progesterone deficiency
Usual adult dose
Often 10 mg once or twice daily; dose and timing depend on the condition and cycle.
Common side effects
- Headache or migraine
- Nausea
- Breast tenderness
- Irregular bleeding or spotting
Important warnings
- Unexplained vaginal bleeding needs assessment before treatment.
- Seek review for jaundice or severe allergic symptoms.
- Some progesterone-sensitive cancers or serious liver disease may make treatment unsuitable.
- Not a contraceptive; pregnancy use depends on the indication.
Pregnancy
May be prescribed for specific pregnancy-related indications; evidence and recommendations vary by indication.
Breastfeeding
Use during breastfeeding is generally not recommended because safety information is limited.
Interactions
- Medicines that induce liver enzymes, including rifampicin, carbamazepine, and phenytoin, may reduce its effect.
- Some HIV medicines and herbal St John’s wort may lower dydrogesterone levels.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.